<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>checkbox</title>
</head>
<body>
<h1>我要学 <span class="text">__</span></h1>
<ul class="box">
    <li>课程 java <input type="checkbox" value="java"></li>
    <li>课程 JavaScript <input type="checkbox" value="JavaScript"></li>
    <li>课程 CSS <input type="checkbox" value="CSS"> </li>
</ul>
<div>
    <input type="text" class="ipt"> <button class="add">添加</button>
</div>
<script src="checkbox.js"></script>
</body>
</html>
